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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单选框</title>
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    </style>
</head>
<body>
    <h1>表单进阶-单选框</h1>
    <div>对京东首页满意度调查</div>
    <div>
        <input type="radio" name="aa" id="a1"><label for="a1">非常满意</label>
    </div>
    <div>
        <label><input type="radio" name="aa" checked>满意</label>
    </div>
    <div>
        <label><input type="radio" name="aa">一般</label>
    </div>
    <div>
        <label><input type="radio" name="aa">不满意</label>
    </div>
</body>
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